Piezokeramischer Resonator (1999)
Gesemann, H.J., Schoenecker, A., Seffner, L.
The piezoceramic resonator uses a thick oscillation. A PZT layer is arranged on a carrier with a ground electrode using a sintering process at less than or equal to 950 degrees centigrade. A cover...
Aktor aus Einzelelementen (1999)
Gesemann, H.J., Schönecker, A.
The linear actuator [5] is formed from a stack of laminates of piezoelectric or electrostrictive material to provide a large expansion. The height of the stack is limited by placing it on the surface...
Verfahren zur Herstellung von Keramik-Polymer-Verbunden (1998)
Seffner, L., Gesemann, H.J., Schönecker, A.
In a process for manufacturing a ceramic polymer composite sintered ceramic components are placed in a mould cavity, polymer is added to fill the cavity and the mould contents compressed. The polymer...
Piezoelektrischer Aktor mit veraenderbarer Steifigkeit (1998)
Gesemann, H.J., Schoenecker, A., Seffner, L.
A piezoelectric actuator of variable rigidity consists of one or more adjacent or overlying individual elements, each comprising a multilayer contractor (3) with alternate side parallel-connected...
Gesemann, H.J., Seffner, L., Schoenecker, A., Schlenkrich, F.
A novel ferroelectric ceramic material comprises a ceramic perovskite solid soln. contg. one or more group 1 and 2 components, the group 1 components being: PbTiO3 (PT), BaTiO3 (BT), Pb(Fe1/2Nb1/2)O3...
Piezoelektrischer Leistungsaktor mit Kuehlung und Verfahren zu seiner Herstellung (1997)
Gesemann, H.J., Schoenecker, A., Keitel, U.
The apparatus includes a stack of elementary polarised rings (1) of sintered lead zirconate-titanate ceramic with contact material (3) between them. The rings are bonded by thermally hardened epoxy...
Gesemann, H.J., Seffner, L., Voelker, K.
The invention relates to the fields of ceramics and thick film technology and refers to a PZT ceramic having a low sintering temperature, as can occur, for example, for compound layers for the...
Niedrig sinternder PZT-Werkstoff (1997)
Gesemann, H.J., Schoenecker, A., Keitel, U., Voelker, K.
Low sintered lead zirconate titanate (PZT) material has the following composition: (1-x) (Pb1-y-Ey)(Zr1zTiz)O3 xZnBi1/3Me1/3Mn1/3O3 (where x = 0.01-0.04; y = 0.0-0.10; z = 0.44-0.48; E = Ba2+, Sr2+;...
Niedrig sinternder Hart-PZT-Werkstoff (1997)
Gesemann, H.J., Schoenecker, A., Voelker, K.
Hard material based on lead zirconate/titanate has composition: (Pb1-yEy)(Zr1-x)O3+A (where y is 0-0.05; z is 0.45-0.5; E is Ba2+/Sr2+; A is oxide combination from 1.3-2.5 Bi2O3; 0.3-0.6 MnO2;...
Grossflaechige piezokeramische Bauelemente (1997)
Gesemann, H.J., Schoenecker, A., Seffner, L., Keitel, U.
A large area piezoceramic component has a more than 5 (pref. 20-150) microns thick piezoceramic layer which has been densely sintered at at most 950 deg. C on a support with a base electrode and...
Sensors/Actuators of the functional ceramics based on Sol-Gel technique for microsystems (1996)
Grimme, R., Otschik, P., Gesemann, H.J.
This paper reports on the application of ceramic materials on silicon by using the Sol-Gel technique to the fabrication of sensors and actuators in a microsystem (MicroFab concept). The technology...
Sensoren, Aktoren auf der Basis eines Sol- Gel - Moduls (1996)
Otschik, P., Kluge, A., Grimme, R., Schönecker, A., Schumacher, A., Gesemann, H.J.
Sol-Fertigung nur inhouse, Entwicklung in Instituten. Erhöhung der Schichtdicke je Beschichtungszyklus. Prozeßvereinfachung durch photosensitive Sole, Auswahl der für das Belichten erforderlichen...
PZT-Dickschicht und Verfahren zu deren Herstellung (1996)
Schoenecker, A., Seffner, L., Gesemann, H.J.
The invention relates to the fields of electrical engineering and electronics, and refers to PZT thick films with resistance gradients which, for example, can be applied to resonators, and a process...
Mikromechanisches Element (1996)
Gesemann, H.J., Schoenecker, A.
The invention relates to the fields of micromechanics and microelectronics and refers to a micromechanical element. The invention is based on the technical problem of specifying a micromechanical...
Low-sintering PZT-ceramics for advanced actuators (1996)
Schoenecker, A., Gesemann, H.J., Seffner, L.
Much effort has been made to reduce sintering temperature Ts of PZT powders, driven by the demands of multilayer actuator fabrication.Suppression of PbO-evaporation and usability of cost effective...
Foliengießtechnologie für Mehrphasengradientenwerkstoffe am Beispiel eines PZT-Biegers (1996)
Lenk, R., Starke, S., Alm, B., Scharrer, K., Gesemann, H.J.
Die Herstellung von Schichtverbunden erfolgt üblicherweise durch Laminieren. Miniaturbauteile werden hergestellt, indem zunächst großflächige Folien übereinandergelegt und durch isostatische...
Verfahren zur Herstellung von PZT-Schichten aus niedrig sinterndem PZT-Pulver (1995)
Seffner, L., Gesemann, H.J., Voelker, K.
The invention refers to the fields of electrical engineering and electronics and relates to a process for producing PZT coatings as required by piezo-electrical components, for example. The task of...
Niedrig sinternde keramische Dielektrika mit hohen DK-Werten fuer Green-Tape-Systeme (1995)
Gesemann, H.J., Schoenecker, A., Voelker, K.
The invention relates to the fields of electrical engineering and electronics and affects dielectrics which can be used in green tape systems as high-dielectric film. The task of the invention...
The invention relates to the fields of electrotechnology and electronics and refers to a process which can be applied, e.g., to the production of piezoceramics. The task of the invention consists...
Verfahren zur Herstellung von PZT-Schichten (1994)
Gesemann, H.J., Seffner, L., Voelker, K.
The invention relates to the field of machine engineering and thick-film technology and relates to a process for the production of PZT coatings as applied in the coating of rollers. The invention is...
PZT-film compositional development and physical properties (1994)
Schönecker, A., Merklein, S., Grond, W., Franke, K., Weihnacht, M., Gesemann, H.J.
The preparation-structure-property relationships on relatively thick (0.5-1.5myrn) polycrystalline PZT-films have been studied. The PZT-films were prepared by sol-gel processing from high molarity...
PZT - Werkstoffe und deren Verwendung (1994)
Niedrig sinternde PZT-Versaetze, die als binaere Komponente Pb(Mg
Preparation and Application of PZT thick film (1994)
Preparation technology and ferroelectric properties of 100-150mym PZT thick films on alumina substrates (20sqcm) are reported. Thick films prepared have a remanent polarization of 10-15myC/sqcm and a...
Low sintering PZT by liquid phase formation (1994)
Schönecker, A., Gesemann, H.J.
The present paper reports on a study to lower sintering temperature of PZT-PMN by transient liquid phase formation. The investigated basic mixture is high sintering with Ts =1240 degree. Ts reduction...
Herstellung und Eigenschaften von PZT-Dickschichten (1994)
Seffner, L., Fischer, K., Häßler, W., Gesemann, H.J.
Die Herstellung von piezoelektrischen Schichten auf keramischen Trägem unter Anwendung der Dickschichttechnologie ist mit den kommerziell verfügbaren Piezowerkstoffen auf PZT-Basis nicht möglich,...
Schönecker, A., Gesemann, H.J.
Beschrieben werden die Eigenschaften von Hart- und Weich-PZT, insbesondere die großen Unterschiede im Polungsverhalten. Aus diesen Unterschieden resultieren verschiedene Eigenschaften von...
New X7 ceramic dielectric for multilayer capacitors: Vortrag auf IUMRS-ICAM '93. (1993)
Schönecker, A., Gesemann, H.J.
Ceramic capacitors are one of the basic components in electronics. Developed originally for military purposes, they have now found use in all areas of electronics, including home appliances and...
Low sintering PZT - materials by conventional powder processing (1993)
Schönecker, A., Gesemann, H.J.
The experimental procedure for lowering sintering temperature of PZT powders is described. The obtained piezoelectric data are discussed and valuated with respect to the demands of multilayer...
Schönecker, A., Otschik, P., Gesemann, H.J.
Within the Fraunhofer-Institute of Ceramic Technologies and Sintered Materials ceramic for electronic devices, as sensors, actuators, energy converters and passive components are developed and...
New ceramic dielectrics for multilayer capacitors (1993)
Schönecker, A., Gesemann, H.J.
Temperature stability of type II dielectrics can be improved by using and tailoring multiphase materials with core- shell microstructure. Using a mixture of Bi-layer-structure oxide and...
Ceramic materials for actuators - composition related properties (1993)
Schönecker, A., Gesemann, H.J.
Based on PZT and relaxor ferroelectrics, various low sintering actuator materials have been investigated. Their properties are discussed showing the different approaches for the development of...
Properties of typ II ceramic dielectrics being used in multilayer capacitors (1992)
Schoenecker, A., Gesemann, H.J.
Basic data of capacitors such as temperature coefficient of permittivity, electric strength, dielectric loss and size must meet the strict requirements of standardization. In addition there are...
Heterogener dielektrischer keramischer Werkstoff (1992)
DE 4041993 A UPAB: 19931006 A heterogeneous dielectric ceramic material (I) of classification X7R comprises (1) 40-50 wt.% BaTiO3, (2) 9-39 wt.% (PbxSr1-x)((Zn1/3Nb2/3)1- yTiy)O3 (where x = 0.85-0.95...